The Genesis GV80 hydrogen concept. Business Insider/Hollis Johnson Hydrogen-powered cars may not be a mainstream vehicle option, but automakers are still investing in the technology.

From an infrastructure standpoint, purely electric vehicles make more sense. There are 16,292 electric charging stations in the United States, but only 40 hydrogen stations in the entire US, according to the US Department of Energy. Of those 40 hydrogen stations, only four can be found outside of California.

But car makers still see potential in hydrogen fuel cells. Batteries are expensive, take a long time to charge, and have limitations when it comes to driving range. Hydrogen-powered vehicles, on the other hand, more closely resemble combustion engines when it comes to the user experience.

Scroll down for a look at all the hydrogen-powered vehicles in the works:

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1. We would be remiss to not start with the Honda Clarity, which Honda began leasing in California at the end of 2016.

The Clarity costs $369 months for 36 months with $2,868 due at signing.
Business Insider/Danielle Muoio

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The EPA gave the car an estimated range of 366 miles — the longest range of any zero-emissions vehicle. Honda says the Clarity has a refuel time of just three to five minutes.

Honda

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Honda and General Motors have invested $85 million to mass produce hydrogen fuel cells for vehicles beginning in 2020. Honda is currently working with Northeast regulators to introduce the car in states like New York and Connecticut.

2. General Motors revealed its monster of a hydrogen-powered car at the at the fall meeting of the Association of the United States Army in October 2016.

General Motors

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The car comes with 37-inch tires and stands at more than 6.5-feet tall and 7-feet wide. The US Army has been testing the vehicle in extreme conditions this year to determine whether it's viable for missions.

General Motors

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GM says it has achieved 3.1 million miles of hydrogen fuel cell testing.

General Motors

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3. Toyota has been working on hydrogen-powered cars the longest, having put 23 years into the technology. Here we see its hydrogen car, the Toyota Mirai.

Toyota

The automaker has been selling the Toyota Mirai in Japan since December 2014, but began sales in California in October 2015 — marking the first time hydrogen-powered vehicles were sold in the United States.

The Toyota Mirai has an EPA estimated range of 312 miles and refuels in just 5 minutes.

The Mirai comes with a front radar sensor and camera that allows it to detect lane drift and alert the driver. It also comes with automatic emergency braking.

Toyota

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Toyota is also testing its fuel-cell technology in an 18-wheeler truck located in the Port of Los Angeles. What will come of the project is still unknown, but Toyota said it's interested in using hydrogen tech in everything from forklifts to SUVs.

Toyota

Toyota is also releasing a fleet of 100 hydrogen-powered buses in Japan for the 2020 Tokyo Olympics. Like Honda, Toyota is also working with regulators in the Northeast to set up a hydrogen infrastructure.

4. Lexus wants to unveil its hydrogen-powered car in 2020, but we have yet to hear details on its range or other specs.

Lexus

It's worth noting that Lexus' parent company is Toyota.

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A concept version of the hydrogen car comes with high-tech perks like a display that can be controlled with simple hand gestures.

Lexus

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5. Audi unveiled a concept car, the h-tron quattro, at the 2016 Detroit Auto Show that the automaker says can drive 372 miles on hydrogen alone.

Audi

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Audi says the mustard yellow, fuel cell car can go from 0 to 62 miles per hour in under 7.1 seconds.

Audi

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The h-tron quattro comes with a "virtual cockpit" that replaces the instrument panel and center console with digital screens. It also comes with a driver assist system that projects your surroundings in real-time so you can change lanes and merge easier.

Audi

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It's still unclear if Audi will go through with making a production version of the hydrogen car, but the automaker has said it's exploring the technology.

6. BMW is working on a hydrogen car starting in 2020.

BMW says its hydrogen car will have a range exceeding 300 miles and a refuel time of under five minutes.

BMW

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7. Ford has back-tracked on its hydrogen plans, but it says it's still exploring the technology.

Ford

In January 2013, Ford announced it was teaming up with Mercedes-Benz's parent company Daimler and Nissan to accelerate the creation of fuel cell technology and potentially release a mass-market vehicle in 2017.

"On the passenger side, I'm probably more bullish on the battery electric side than on fuel cells," he said. "But we are still investing and we are still doing research, and it's still something that we are very interested in."

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8. Mercedes-Benz unveiled its hydrogen-powered SUV at the Frankfurt Motor Show in September. The vehicle is built on the same platform as the company's GLC SUV and will hit the market at the end of 2019.

The SUV comes with a 9.3-kWh battery pack that allows the SUV to achieve a combined range of 271 miles, according to standards set by the New European Driving Cycle. The car will have a lower range estimate in the US once it's rated by the Environmental Protection Agency.

Mercedes-Benz

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Mercedes says the car can get up to 197-hp and 278 lb.-ft. of torque. It can reach an electronically-limited top speed of 99 mph.

Mercedes-Benz

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9. Startup Nikola Motor Company unveiled its hydrogen-powered truck in Dec. 2016 that it said will have a range between 800 miles and 1,200 miles.